MALICIOUS
162
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for 'ielts listening test 4 section 3 answers'. The ML classifier strongly indicates maliciousness, and the presence of a download button lure reinforces the deceptive nature of the document. The document's primary function appears to be to trick users into visiting a malicious URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.ru/pify?keyword=ielts+listening+test+4+section+3+answers
- http://wivupi.barbarayontzatstac.com/uploads/1/3/0/8/130814124/aa46e80b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/5005/7373/files/al_azkar_imam_nawawi_download.pdf
- https://cdn.shopify.com/s/files/1/0433/9384/3358/files/jeburizojezipu.pdf
- https://cdn.shopify.com/s/files/1/0435/3572/8794/files/calligraphy_letters_fonts_free.pdf
- https://cdn.shopify.com/s/files/1/0430/2353/2195/files/mazinger_z_wallpaper_android.pdf
- https://cdn.shopify.com/s/files/1/0430/8615/1834/files/31815303953.pdf
- https://cdn.shopify.com/s/files/1/0432/5274/4356/files/jepaziki.pdf
- https://cdn.shopify.com/s/files/1/0429/1543/0553/files/18341295035.pdf
- https://cdn.shopify.com/s/files/1/0430/7235/6509/files/didigexesexidiwufub.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000056e5.bincce21418d5df8c3d0c7f838339f329ee4ba67865b8cc1d8973829d8d27cabade |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x56E5 | 5248 bytes |
font_01_sfnt_off000068e1.bin0c864e10296e02a3b8814c984eb681fe23f2c0b4e3769168d96696432a25fdf5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68E1 | 10288 bytes |
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